Page-end lock



Aug. 27, 1929. J. HOELLRIGL 1,726,487

' PAGE END LocK Filed Jan. 27, 1928- 4 Sheets-Sheet 1 ATTO RN EY Aug.27, 1929. J.- HOELLRIGL I 1,726,487

PAGE END LOCK Filed Jan. 2'7, 1928 4 Sheets-Sheet 2 M\ 7%/// I NN w Jose07217591? Z M Aug. 7; 1929. J. HOELLRIGL PAGE END LOCK 4 Sheets-Sheet 5Filed Jan. 27, 1928 x BY Wm i ATTO RN EY Aug. 27, 1929. ,J. HOELLRIGLPAGE END LOCK Filed 1928 4 Sheets-Sheet fear/.771 Iowa/2;

ATTORNEY Patented Aug. 27, 1929.

' UNITED STATES.

1,726,487 PATENT OFFICE.

JOSEPH HOELLRIGL, OF MANCHESTER, NEW HAMPSHIRE, ASSI [GNOR TO 'UNDERWOODELLIOTT FISHER COMPANY, OF N EWVYORK, N; Y., A CORPORATION OF'DELAWARE.

lAGE-END LOOK.

Application filed January 27, 1928. Serial No. 249,938.

This invention relates to a line index and page end lock fortypewriters, the general object of the invention being to provide meansfor locking the platen against rotary movement after the platen has beenmoved to position the sheet in the typewriter at any predetermined pointso that the typist will be prevented from writing toomany lines on apage.

. Another object of the invention is to provide means for sounding analarm a few lines before the platen locking means come into operation soas to warn the typist that she is nearing the end of the page or thepoint where the written lines are to end.

A still further object of the invention is to provide means foroperating the key locking mechanism of the typewriter after the platenlocking means come .into operation so as to prevent the keys beingoperated after the last line has been printed on the page.

Another object of the invention is to so arrange the platen lockingmeans that the platen can be rotated in a reverse direction withoutinterference on the part of the locking means and to cause this reversemovement of the platen to reset the locking means.

A further object of the invention is to provide indicating means wherebythe operator can easily ascertain the number of lines written on a pageand the number of lines to be written.

This invention also consists in certain other features of constructionand in the combination and arrangement ofthe several parts, to behereinafter fully described, illustrated in the accompanying drawingsand specifically pointed out in the appended claims.

In describing my invention in detail, reference will be had to theaccompanying drawings wherein like characters denote like orcorresponding parts throughout the several views, and in which Figure 1is a side view of a typewriter to which the invention is attached.

Figure 2 is a front view of the platen and its associated parts, withportions of the typewriter frame in section.

Figure 3 is a rear view of the upper portion of a typewriter.

Figure 4 is a. plan View of the platen and the parts of the invention.

Figure 11 is a View of the locking arm for the locking wheel.

In these drawings, thenumeral 10 indirates a notched and numbered wheelwhich has a threaded opening therein for receiving a threaded portion 11of the platen shaft 11. Between the wheel 10 and the platen 12 a spaceis left for the operation of a trip lever and of two little stops "13and 13,-one near the circumference of the wheel 10 and the other nearthe circumference of the platen 12. The wheel 10 is divided tocorrespond to the ratchet wheel of the line space regulator. If onerevolution of the platen writes thirty-three lines in single space, thenthe wheel 10 is divided into thirty-three single line spaces, and thenumbers, indicated by the numeral 14, from 1 to 33 are stampedsuccessively upon these spaces on the circumference of the wheel 10.These numbers serve as indicators and as a scale to determine the numberof lines which may still be written before reaching the locking point,which number is found with thehelp of the corresponding scale 15 at theend of platen 12. Between the line spaces or numerals 14 on the numberedwheel 10 there are cuts or notches 16 to engage an arm '17 pivoted tothe lever 30 on the typewriter. This arm 17 holds wheel 10 a in positionand its edge serves as a rail or guide along which the wheel 10 slidesas the writing proceeds. It also serves as a pointer for the two scales.The stop 13 on the wheel 10 is opposite number 1 on scale 14 and stop13' on the platen is opposite number 1 on scale 15, and it is there stop13 comes in contact with and interlocks with the corresponding stop 13on the platen 12.

The end plate 18 of platen 12, besides carrying stop 13, also carriestrip lever 19 which is tripped ofi two lines before the look by stop 13in wheel 10. This trip lever 19 is attached to a shaft 19, which passesthrough the plate 18 and has a hammer 21 connected thereto for strikinga bell 20 in the platen. This shaft is journaled in plate Y18 and in abracket 22 fixed to the platen shaft 11.

A spiral spring 23 on shaft 19 has one end attached to the shaft and itsother end is attached to the back of plate 18. This spring holds thetrip lever 19 against a stop pin 29 on the plate 18. The bell 20 isfixed to the shaft by pin 24. The trip lever 19 is in two parts, theouter part a being pivoted at 27 on the inner part b and the part a isheld against stop pin 25 on part b by spring 26 also fixed to the innerpart b. The trip lever 19 thereby causes the hammer 21 to strike thebell 20 when stop 13 of wheel 10 operates forwardly against said lever,but to give way when pin 13 on the wheel 10 is operated backwardlyagainst it. Thus the movement of the outer part a around pivot 27insures unobstructed backward operation of the platen. The plate 18 hasopenings or perforations 28 therein so that the warning signal of thebell 20 may be distinctly heard, when stop 13 on wheel 10 trips overtrip lever 19 two lines before the parts lock.

The arm 17 is movably attached to the transmission lever 30, as shown at31, and said arm may be swung back to rest upon the lever 30 by means ofa shoulder 32 provided for this purpose. The transmission lever 30 moveson the pivot screw 33 on the support 34 which is attached to thecarriage. This support 34 is provided with adjustable front stop 35 andback stop 36 to limit the action of the lever 30. The back stop 36 hasattached to it a small fiat steel spring 37 to hold the lever 30 inraisedor inoperative posltion. The transmission lever 30 is at the,other end movably attached to a line lock' bar 38 which extends alongthe whole length of the carriage and is pivoted to both sides of thecarriage as at 39. This line lock bar 38, when pressed down, will engagea roller 40 on the line lock link 41 fastened to the line lock lever 42,this link 41 being connected with the key locking means for locking thekeys against movement at the end of each line. Y

As will be seen, when the bar 38 is in raised position, it will nottouch the roller 40. The spring 37 holds the bar 38 and transmissionlever 30 in inoperative position. The arm 17 is rovided with a fingerpiece 17' for permitting it to be raised and lowered.

The operation of this combined platen and keylock is as follows: ThewheellO is locked by the arm 17 at number 33 on the wheel and the wheel10 is turned once completely around and locked by the arm 17 at number33. As the writing proceeds, the threaded portion of the platen shaft 11screws into the wheel 10 which slides along the edge of arm 17 andbrings the two stops 13 nearer together. At number 31 or two linesbefore the lock, stop 13 on the wheel 10 trips over the lever 19, whichcauses the hammer 21 to be raised and then released, and the bell 20will be struck a blow against its edge which warns the operator that hehas but two more lines to write. At the thirty-third line, the platenmovement is blocked by the stop 13 on the wheel 10 engaging stop 13 onthe platen and only one more single line can be turned off which willlock the keys, for when the stops 13 and 13 come together, the wheel 10is caused to turn with the platen and this movement of wheel 10 exertspressure on arm 17 which is communicated to lever 30 and bar 38, whichcauses said bar to throw the key lock mechanism into operation. When thelever 30 strikes member 36, further movement of the parts is preventedand this arm 17 locks the wheel 10 and the platen against further rotarymovement.

Supposewe are writing on a sheet eleven inches long and wish to leave alower margin of five single lines. Then we intend to write sixty-onelines, if there are six single lines to the inch, and the wheel 10 islocked at number 28, because 33 plus 28 equals 61. This time the wheel10 is locked after it has been set in the second revolution,-because thefirst revolution gives only thirtythree lines. Or suppose we are writingon a sheet thirteen inches long, and wish to leave a lower margin of oneinch. Then the wheel is locked at number 6 in the third revolution,because 66 plus 6 equals 72.

It is not at all necessary, however, always to start with number 33' andto lock the wheel 10 at the 0 point before inserting the paper, althoughthis method is best for starting a manuscript, for example, where onesetting will be sufficient for a whole book. The paper may, however, beinserted and adjusted to the line gauge in the usual manner withoutgiving any attention to the numeral position of the wheel 10. In thatstops meet after the paper has been inserted and adjusted. The arm 17Wlll then fall on any number from 1 to 33. Suppose we wish to stopwriting at the e1ghteenth l1ne to leave an open space on the sheet which1s to be filled in later with a list of names or with the items of abill, etc., and after the paper has been inserted and adjusted and thewheel turned in until it looks, the arm 17 falls on number 3. Then thisfirst lock number 3 is added to the number of lines we wish to write, inthis case 18 plus 3 equals 21, and the wheel v10 is locked at number 21.,If in adding the first lock number to the number of lines we wish towrite the sum is above 33, the number 33 is subtracted from'the sum toobtain the second-lock number, and the wheel 10 is set in the second orthird revolution. While a description of this operation sounds somewhatcomplicated, the method is in fact very rapid and extremely simple, anddoes away with the use of a lar er and separate wheel for thls purposeWhlCh would contain the higher numbers. For those not used to any mentalfiguring, a table may be provided with the numbers 3et99 along thesecond look number which will show the second lock number at a glance.

It is not necessary to re-set the wheel 10 with the arm 17 every timethat a new sheet is inserted. By drawing the paper out of the machine inan opposite direction fro that in which it was inserted, the lockre-sets itself, so that any number of. sheets of equal size and with thesame purpose in mind may be written without touching the arm 17 at all.Upon removal of the written sheet, the mechanism releases the platen andthe keys for use on the next sheet, and when thenew sheet is inserted,the scale 15 on the cylinder 12 is used. The number on the scale 15which is in line with the arm or pointer 17 when the upper edge of thepaper is even with the line gauge, isthe number at which the counting isusually begun. This scale 15 indicates at any time the number of lineswritten, and when the two scales coincide both the platen and the keysare locked.

This method of connecting the platen lock with the typebar lock preventswriting over the last line twice, which might happen in rapid touchtypewriting. The connection of the two locks requires different methodsfor different typewriters, and the present method is adapted to machineswhich have the line lock lever in the back of the machine such as theRoyal Typewriter. For the Remington and the Underwood machines, theconneotion would be even simpler, because theyv havethe line lockmechanism in front. The

operation, however, is practically the same in all. After the two stops13 have come together after warnin the operator with a bell s gnal, hemay still turn off one single mined line.

on the next line, he can no longer press down the keys.

After the wheel 10 has been set, it needs no further-attention like apencil mark on the paper or a page end indicator. The lock is absolutelyaccurate and positively prevents the unintentional writing below apredeter- It will be seen that the device can be used for many differentpurposes, and that the writing in single, double, triple, and variouslyspaced lines is equally controlled. It will also be apparent that whenthe lock is not required, the operator has only to swing back the arm 17to let the wheel 10 turn with the platen.

When the device is installed on the right side of the platen, a leftthread must be used on the shaft. This device supplies the opersheetsuch as the page end. It indicates for him at any time the number oflines written, counting from the top edge of the sheet, from the firstline printed, or as otherwise desired, and it also indicates for him thenumber of lines that he may still write before reaching thepredetermined stopping point on the sheet. It' makes it possible to setand use each indicator or scale independently of the other, or to usethem both in conjunction, and the scales can be connected with ordisconnected from the locking mechanism by the mere touch of a lever. Itpermits the reversing of the platen from any position without affectingthe indicating. It

supplies the operator with an automatic bell signal to warn him that hehas only one more line to write before reaching the pre-v determinedline position. It automatically locks both the cylinder and the keysagainst use, when he has written the predetermined number of lines. Uponbackward removal of the sheet, the mechanism releases the platen and thekeys for use on the succeeding page and automatically re-sets, and whenthe new sheet is inserted, the device resumes its indicating duties. Theinvention is adaptable to all machines using a platen and a line lock.

It is thought from the foregoing description that the advantages andnovel features of my invention will be readily apparent.

It is to be understood that I may make changes in the construction andin the combination and arrangement of the several parts, provided thatsuch changes fall with in the scope of the appended claims.

What I claim is 1. In combination with a typewriter havifig key lockingmechanism and a platen, an adjustable member, means for moving themember toward the platen when the platen is rotated in a forwarddirection, means for locking the member to the platen after the platenhas been turned a predetermined degree, means for locking the memberagainst rotary movement after it has become locked to the platen, andmeans associated with the last mentioned means for actuating the keylocking mechanism of the typewriter.

2. In combination with a typewriter hav ing key locking mechanism and aplaten, an adjustable member, means for moving the member toward theplaten when the platen is rotated in a forward direction, means forlocking the member to the platen after the platen has been turned apredetermined degree, means for locking the member against rotarymovement after it has become locked to the platen, means associated withthe last mentioned means for actuating the key locking mechanism of thetypewriter, and means for sounding an alarm shortly before the memberbecomes locked to the platen.

3. In combination with a typewriter and its platen, the shaft of whichhas a threaded part, a wheel having a threaded opening therein forreceiving the threaded portion, a pivoted member engaging parts of thewheel for holding the same against rotary movement so that it will bemoved toward the platen or away therefrom by the threads when the platenis turned, a projection on the platen, a projection on the wheel forengaging the projection on the platen when the wheel has moved within acertain distance of the platen to cause the wheel to rotate with theplaten on the forward rotation of the platen and means for causing thepivoted member to lock the wheel and platen against rotary movementafter the wheel has.

become locked to the platen.

4C. In combination with a typewriter and its platen, the shaft of whichhas a threaded part, a wheel having a threaded opening therein forreceiving the threaded portion, a pivoted member engaging parts of thewheel for holding the same against rotary movement so that it will bemoved toward the platen oraway therefrom by the threads when the platenis turned, a projection on the platen, a projection on the wheel forengaging the projection on the platen when the wheel has moved within acertain distance of the platen to cause the wheel to rotate 'with theplaten on the forward rotation of the platen, means for causing thepivoted member to lock the wheel and platen against rotary movementafter the wheel has become locked to the platen, an alarm, a trip leveron the platen operated by the projection on the wheel and means forsounding the alarm when the trip lever is operated.

5. In combination with a typewriter having key locking mechanism and itsplaten, the shaft of which has a threaded part, a wheel having athreaded opening therein for receiving-the threaded portion, a pivotedmember engaging parts of the wheel for holding the same against rotarymovement so that it will be moved toward the platen or away therefrom bythe threads when the platen is turned, a projection on the platen, aprojection on the wheel for engaging the projection on the platen whenthe wheel has moved within a certain distance of the platen to cause thewheel to rotate with the platen on the forward rotation of the platen,means for causing the pivoted member to lock the wheel and platenagainst rotary movement after the wheel has become locked to the platen,and means operated by the pressure exerted on the pivoted member by thewheel for actuating the key locking mechanism of the typewriter.

6. In combination with a typewriter havmechanism and its platen theshaft of which is provided with a threading key lockin ed portion, awheel having a threaded opening therein receiving the threaded portion,the circumference of the Wheel having spaced notches therein, aprojection on the platen, a'projection on the wheel for engaging thefirst mentioned projection when the wheel has been moved within acertain distance of the platen for causing the wheel to turn with theplaten when the platen is turned in a forward direction, a transmissionlever pivoted to the typewriter, an arm pivoted to the lever and havingits free end engaging any one of the notches in the wheel to preventrotary movement of the wheel while permitting it to move toward theplaten, a sto for limiting therearward movement of the transmissionlever and thus causing the arm to lock the wheel and platen againstrotary movement when the projection on the wheel is in engagement withthe projection on the platen, a spring for holding the transmissionlever in its forward position, a bar pivoted to the carriage of thetypewriter and connected to the transmission lever, a roller carried bythe link which is connected with the key locking mechanism of thetypewriter so that the rearward movement of the transmission lever,under the pressure exerted by the wheel on the arm opening thereinreceiving the threaded portion, the circumference of the wheel havingspaced notches therein, a projection on the platen, a projection on thewheel for engaging thefirst mentioned projection when the wheel has beenmoved within a certain, distance of the platen for causing the wheel toturn with the platen when the platen is turned in a forward direction, atransmission lever pivoted to the typewriter, an arm pivoted to thelever and having its free end engaging any one of the notches in thewheel to prevent rotary movement of the wheel while permitting it tomove toward the platen, a stop for limiting the rearward movement of thetransmission lever and thus causing the arm to lock the wheel and platenigainst rotary movement when the projection on the wheel is inengagement with the projection on the platen, a spring for holding thetransmission lever in its forward position, a bar pivoted to thecarriage of the typewriter and connected to the transmission lever, aroller carried by the link which is connected with the key lockingmechanism of the typewriter so that the rearward movement of thetransmission lever, under the pressure exerted by the wheel on the armwill cause the bar to engage the roller and thus throw the key lockingmechanism into operation,a trip lever on the platen adapted to beengaged by the projection on the wheel before the projection strikes theprojection on the platen and an alarm operated by the trip lever.

8. In combination with a typewriter having key locking mechanism and itsplaten, the shaft of which is provided with a threaded portion, a wheelhaving "a threaded opening therein receiving the threaded portion, thecircumference of the wheel having spaced notches therein, a projectionon the platen, a projection on the wheel for engaging the firstmentioned projection when the wheel has been moved within a certaindistance of the platen for causing the wheel to turn with the platenwhen the platen is turned in a forward direction, a transmission leverpivoted to the typewriter, an arm pivoted to the lever and having itsfree end engaging any one of the notches in the wheel to prevent rotarymovement of', .the wheel while permitting it to move toward the platen,a stop for limiting the rearward movement of the transmission leverandthus causing the arm to lock the wheel andplaten against rotary movementwhen the projection on the Wheel is in engagment with the projection onthe platen, a spring for holding the transmission lever in its forwardposition, a bar pivoted to the carriage of the typewriter and connectedto the transmission lever, a roller carried by the link which isconnected with the key locking mechanism of the typewriter so that therearward movement of the transmission lever, under the pressure exertedby the Wheel on the arm will cause the bar to engage the roller and thusthrow the key locking mechanism into operation, a trip lever on theplaten adapted to be engaged by the projection on the wheel before theprojection strikes the projection on the platen, an alarm operated bythe trip lever, said trip lever being formed of two parts pivotallyconnected together, a stop on one part engaging the other part forcausing the projection on the wheel to operate the lever when the wheelis turned in one direction but permitting the projection to pass thelever without operating the alarm when the wheel is turned in anotherdirection and a spring for normally holding one part against the stop onthe other part.

9. In combination with a typewriter hav ing key locking mechanism andits platen, the shaft of which is provided with a threaded portion, aWheel having a threaded opening therein receiving the threaded portion,the circumference of the wheel having spaced notches therein, aprojection on the platen, a projection on the wheel for engaging thefirst mentioned projection when the wheel has been moved within acertain distance of the platen for causing the wheel to turn with theplaten when the platen is turned in a forward direction, a transmissionlever pivoted to the typewriter, an arm pivoted to the lever and havingits free end engaging any one of the notches in the wheel to preventrotary movement of the wheel while permitting it to move toward theplaten, a stop for limiting the rearward movement of the transmissionlever and thus causing the arm to lock the wheel and platen againstrotary movement when the projection on the wheel is with the projectionon the platen, a spring for holding the transmission lever in itsforward position, a bar pivoted to the carriage of the typewriter andconnected to the transmission lever, a roller carried by the link whichis connected with the key locking mechanism of the typewriter so thatthe rearward movement of the transmission lever, under the pressureexerted by the wheel on the arm will cause the bar to engage the rollerand thus throw the key locking mechanism into operation, a trip lever onthe platen adapted to be engaged by the projection on the wheel beforethe in engagement projection strikes the projection on the platen, analarm operated by the trip lever, said trip lever being formed of twoparts pivotally connected together, a stop on one part engaging theother part for causing the projection on the wheel to operate the leverwhen the wheel is turned in one direction but permitting the projectionto pass the lever without operating the alarm when the wheel is turnedin another direction, a spring for normally holding one part against thestop on the other part, a scale on the} platen and a scale on theperiphery of the wheel, the numbers of which are arranged between thenotches, said scales indicating the number of lines written on a sheetplaced in the typewriter and the number of lines to be written beforethe last line is printed.

10. In combination with a typewriter and an adjustable member on theshaft of the platen, means for moving the member toward and away fromthe platen when the platen is turned in one direction or the other, saidmember having spaced notches in its periphery, a pivoted arm having apart adapted to engage any one of the notches to hold the member againstrotation but permitting it to have sliding movement on the platen shaft,a projection on the member, a projection on the platen with which thefirst projection engages when the member has moved 'within a certaindistance of the platen and a scale on the memher for facilitating theadjustment of the member in relation to the platen and for indicatingthe number of lines written on a sheet in the typewriter and the numberof lines to be written before a predetermined number of lines have beenwritten.

11. In combination with a typewriter and an adjustable member on theshaft of the platen, means for moving the member toward and away fromthe platen when the platen is turned in one direction or the other, saidmember having spaced notches in its periphery, a pivoted arm having apart adapted to engage any one of the notches to hold the member againstrotation but permitting it to have sliding movement on the platen shaft,a projection on the member, a pro ectlon on the platen with which thefirst pro ection engages when the member has moved within a certaindistance of the platen and a scale on the member for facilitating theadjustment of the member in relation to the platen and for indicatingthe number of lines written on a sheet in the typewriter and the numberof lines to be written before a predetermined number of l nes have beenwritten, and a second scale on the platen, the numeral1 on each scalebeing opposite the projection.

12. In combination with a typewriter and an adjustable member on theshaft of the platen, means for moving the member toward and away fromthe platen when the platen is turned in one direction or the other, saidmember having spaced notches in its periphery, a pivoted arm having apart adapted to engage any one of the notches to hold the member againstrotation but permitting it to have sliding movement on the platen shaft,a projection on the member, a projection on the platen with which thefirst projection engages when the member has moved within a certaindistance of the platen and a scale on the member for facilitating theadjustment of the member in'relation to, the

platen and for indicating the number of lines written on a sheet in thetypewriter and the number of lines to be written before a predeterminednumber of lines have been written, a second scale on the platen, thenumeral 1 on each scale being opposite the projection, and means forsounding an alarm shortly before the projection on the member comes intocontact with the projection on the platen.

13. In combination with a typewriter and an adjustable member on theshaft of the platen, means for moving the member toward and away fromthe platen when the platen is turned in one direction or the other, saidmember having spaced notches in its periphery, a pivoted arm having apart adapted to engage any one of the notches to hold the member againstrotation but permitting it to have sliding movement on the platen shaft,a projection on the member, a projection on the platen with which thefirst projection engages when the member has moved within a certaindistance of the platen and a scale on the member for facilitating theadjustment of the member in relation to the platen and for indicatingthe number of lines written on a sheet in the typewriter and the numberof lines to be written before a predetermined number of lines have beenwritten, a second scale on the platen, the numeral 1 on each scale beingopposite the projection, means for sounding an alarm shortly before theprojection on the member comes into contact with the projection on theplaten, and means for operating thekey locking means of the typewriterafter the member is locked to the platen.

In testimony whereof I aflix my signature.

JOSEPH HOELLRIGL.

